WorksheetsChemistry Final Review
Total questions: 108
Worksheet time: 1hrs 1mins
Which of the following is NOT an example of matter?
air
heat
smoke
water vapor
A golf ball has more mass than a tennis ball because it ____.
takes up more space
contains more matter
contains different kinds of matter
has a definite composition
An example of an extensive property of matter is ____.
temperature
pressure
mass
hardness
All of the following are physical properties of matter EXCEPT ____.
mass
color
melting point
ability to rust
Which state of matter has a definite volume and takes the shape of its container?
solid
liquid
gas
both b and c
Which of the following is a heterogeneous mixture?
air
salt water
steel
soil
Which of the following is a heterogeneous mixture?
vinegar in water
milk
oil and vinegar
air
A substance that can be separated into two or more substances only by a chemical change is a(n) ____.
solution
element
mixture
compound
The chemical symbol for iron is ____.
fe
FE
Fe
Ir
Which of the following is a chemical property?
color
hardness
freezing point
ability to react with oxygen
Which of the following is NOT a physical change?
grating cheese
melting cheese
fermenting of cheese
mixing two cheeses in a bowl
Which of the following does NOT involve a physical change?
mixing
melting
grinding
decomposing
A chemical change occurs when a piece of wood ____.
is split
is painted
decays
is cut
When an iron nail is ground into powder, its mass ____.
stays the same
decreases
increases
cannot be determined
The expression of 5008 km in scientific notation is ____.
5.008 x 10^3 km
50.08 x 10^4 km
5.008 x 10^-3 km
5.008 x 10^4 km
The closeness of a measurement to its true value is a measure of its ____.
precision
accuracy
reproducibility
usefulness
If the temperature changes by 100 K, by how much does it change in °C?
0°C
37°C
100°C
273°C
The smallest particle of an element that retains the properties of that element is a(n) ____.
atom
electron
proton
neutron
Which of the following is NOT a part of Dalton's atomic theory?
All elements are composed of atoms.
Atoms are always in motion.
Atoms of the same element are identical.
Atoms that combine do so in simple whole-number ratios
Which of the following is true about subatomic particles?
Electrons are negatively charged and are the heaviest subatomic particle.
Protons are positively charged and the lightest subatomic particle.
Neutrons have no charge and are the lightest subatomic particle.
The mass of a neutron nearly equals the mass of a proton.
All atoms are ____.
positively charged, with the number of protons exceeding the number of electrons
negatively charged, with the number of electrons exceeding the number of protons
neutral, with the number of protons equaling the number of electrons
neutral, with the number of protons equaling the number of electrons, which is equal to the number of neutrons
The particles that are found in the nucleus of an atom are ____.
neutrons and electrons
electrons only
protons and neutrons
protons and electrons
As a consequence of the discovery of the nucleus by Rutherford, which model of the atom is thought to be true?
Protons, electrons, and neutrons are evenly distributed throughout the volume of the atom.
The nucleus is made of protons, electrons, and neutrons.
Electrons are distributed around the nucleus and occupy almost all the volume of the atom.
The nucleus is made of electrons and protons.
The nucleus of an atom is ____.
the central core and is composed of protons and neutrons
positively charged and has more protons than neutrons
negatively charged and has a high density
negatively charged and has a low density
The atomic number of an element is the total number of which particles in the nucleus?
neutrons
protons
electrons
protons and electrons
An element has an atomic number of 76. The number of protons and electrons in a neutral atom of the element are ____.
The sum of the protons and neutrons in an atom equals the ____.
atomic number
nucleus number
atomic mass
mass number
What does the number 84 in the name krypton-84 represent?
the atomic number
the mass number
the sum of the protons and electrons
twice the number of protons
All atoms of the same element have the same ____.
number of neutrons
number of protons
mass numbers
mass
Isotopes of the same element have different ____.
numbers of neutrons
numbers of protons
numbers of electrons
atomic numbers
The mass number of an element is equal to ____.
the total number of electrons in the nucleus
the total number of protons and neutrons in the nucleus
less than twice the atomic number
a constant number for the lighter elements
Which of the following sets of symbols represents isotopes of the same element?
42 J, 42 J, 40 J
19 L, 20 L, 21 L
38 M, 38 M, 38 M
59 Q, 55 Q, 54 Q
In which of the following is the number of neutrons correctly represented?
19, 9 F has 0 neutrons.
75, 33 As has 108 neutrons.
24, 12 Mg has 24 neutrons.
238, 92 U has 146 neutrons.
What unit is used to measure weighted average atomic mass?
amu
gram
angstrom
nanogram
In the Bohr model of the atom, an electron in an orbit has a fixed ____.
position
color
energy
size
How does the energy of an electron change when the electron moves closer to the nucleus?
It decreases.
It increases.
It stays the same.
It doubles.
What is the shape of the 3p atomic orbital?
sphere
dumbbell
bar
two perpendicular dumbbells
How many energy sublevels are in the second principal energy level?
1
2
3
4
What is the maximum number of d orbitals in a principal energy level?
1
2
3
5
The shape (not the size) of an electron cloud is determined by the electron's ____.
energy sublevel
position
speed
principal quantum number
The letter "p" in the symbol 4p^3 indicates the ____.
spin of an electron
orbital shape
principle energy level
speed of an electron
What is the next atomic orbital in the series 1s, 2s, 2p, 3s, 3p?
2d
3d
3f
4s
According to the aufbau principle, ____.
an orbital may be occupied by only two electrons
electrons in the same orbital must have opposite spins
electrons enter orbitals of highest energy first
electrons enter orbitals of lowest energy first
What is the electron configuration of potassium?
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹
1s² 2s² 2p¹⁰ 3s² 3p³
1s² 2s² 3s² 3p⁶ 3d¹
1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹
How many unpaired electrons are in a sulfur atom (atomic number 16)?
0
1
2
3
Which scientist developed the quantum mechanical model of the atom?
Albert Einstein
Erwin Schrodinger
Niels Bohr
Ernest Rutherford
According to the Heisenberg uncertainty principle, if the position of a moving particle is known, what other quantity CANNOT be known?
mass
charge
spin
velocity
What is another name for the representative elements?
Group A elements
Group B elements
Group C elements
transition elements
What is another name for the transition metals?
noble gases
Group A elements
Group B elements
Group C elements
Which of the following elements is in the same period as phosphorus?
carbon
magnesium
nitrogen
oxygen
Each period in the periodic table corresponds to ____.
a principal energy level
an energy sublevel
an orbital
a suborbital
The modern periodic table is arranged in order of increasing atomic ____.
mass
charge
number
radius
Of the elements Pt, V, Li, and Kr, which is a nonmetal?
Pt
V
Li
Kr
To what category of elements does an element belong if it is a poor conductor of electricity?
transition elements
metalloids
nonmetals
metals
What element has the electron configuration 1s² 2s² 2p⁶ 3s² 3p²?
nitrogen
selenium
silicon
silver
Elements that are characterized by the filling of p orbitals are classified as ____.
groups 3A through 8A
transition metals
inner transition metals
groups 1A and 2A
Which subatomic particle plays the greatest part in determining the properties of an element?
proton
electron
neutron
none of the above
Which of the following elements is a transition metal?
cesium
copper
tellurium
tin
Which of the following groupings contains only representative elements?
Cu, Co, Cd
Ni, Fe, Zn
Al, Mg, Li
Hg, Cr, Ag
How does atomic radius change from top to bottom in a group in the periodic table?
It tends to decrease.
It tends to increase.
It first increases, then decreases.
It first decreases, then increases.
How does atomic radius change from left to right across a period in the periodic table?
It tends to decrease.
It tends to increase.
It first increases, then decreases.
It first decreases, then increases.
Atomic size generally ____.
increases as you move from left to right across a period
decreases as you move from top to bottom within a group
remains constant within a period
decreases as you move from left to right across a period
What element in the second period has the largest atomic radius?
carbon
lithium
potassium
neon
Which of the following elements has the smallest atomic radius?
sulfur
chlorine
selenium
bromine
What is the charge of a cation?
a positive charge
no charge
a negative charge
The charge depends on the size of the nucleus.
The metals in Groups 1A, 2A, and 3A ____.
gain electrons when they form ions
form ions with a negative charge
all have ions with a 1+ charge
lose electrons when they form ions
What is the element with the lowest electronegativity value?
cesium
helium
calcium
fluorine
What is the element with the highest electronegativity value?
cesium
helium
calcium
fluorine
What is the energy required to remove an electron from an atom in the gaseous state called?
nuclear energy
ionization energy
shielding energy
electronegative energy
Compared with the electronegativities of the elements on the left side of a period, the electronegativities of the elements on the right side of the same period tend to be ____.
lower
higher
the same
unpredictable
Which of the following statements correctly compares the relative size of an ion to its neutral atom?
The radius of an anion is greater than the radius of its neutral atom.
The radius of an anion is identical to the radius of its neutral atom.
The radius of a cation is greater than the radius of its neutral atom.
The radius of a cation is identical to the radius of its neutral atom.
How many valence electrons are in an atom of phosphorus?
2
3
4
5
What is the electron configuration of the gallium ion?
1s² 2s² 2p⁶ 3s² 3p⁶
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 4p⁶
1s² 2s² 2p⁶ 3s² 3p⁵ 3d¹
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰
The octet rule states that, in chemical compounds, atoms tend to have ____.
the electron configuration of a noble gas
more protons than electrons
eight electrons in their principal energy level
more electrons than protons
A compound held together by ionic bonds is called a ____.
diatomic molecule
polar compound
covalent molecule
salt
What is the formula unit of aluminum oxide?
AlO
Al₂O
AlO₃
Al₂O₃
Which of the following is true about the melting temperature of potassium chloride?
The melting temperature is relatively high.
The melting temperature is variable and unpredictable.
The melting temperature is relatively low.
Potassium chloride does not melt.
Which of the following is NOT a characteristic of most ionic compounds?
They are solids.
They have low melting points.
When melted, they conduct an electric current.
They are composed of metallic and nonmetallic elements.
Which of these elements does not exist as a diatomic molecule?
Ne
F
H
I
Why do atoms share electrons in covalent bonds?
to become ions and attract each other
to attain a noble-gas electron configuration
to become more polar
to increase their atomic numbers
Which of the following is the name given to the pairs of valence electrons that do not participate in bonding in diatomic oxygen molecules?
unvalenced pair
outer pair
inner pair
unshared pair
Which of the following diatomic molecules is joined by a double covalent bond?
O₂
Cl₂
N₂
H₂
When one atom contributes both bonding electrons in a single covalent bond, the bond is called a(n) ____.
one-sided covalent bond
unequal covalent bond
coordinate covalent bond
ionic covalent bond
A bond formed between a silicon atom and an oxygen atom is likely to be ____.
ionic
coordinate covalent
polar covalent
nonpolar covalent
Which of the following covalent bonds is the most polar?
H—F
H—C
H—H
H—N
When placed between oppositely charged metal plates, the region of a water molecule attracted to the negative plate is the ____.
hydrogen region of the molecule
geometric center of the molecule
H—O—H plane of the molecule
oxygen region of the molecule
What type of ions have names ending in -ide?
only cations
only anions
only metal ions
only gaseous ions
When naming a transition metal ion that can have more than one common ionic charge, the numerical value of the charge is indicated by a ____.
prefix
suffix
Roman numeral following the name
superscript after the name
An -ate or -ite at the end of a compound name usually indicates that the compound contains ____.
fewer electrons than protons
neutral molecules
only two elements
a polyatomic anion
Which of the following compounds contains the Mn^3+ ion?
MnS
MnBr2
Mn2O3
MnO
How are chemical formulas of binary ionic compounds generally written?
cation on left, anion on right
anion on left, cation on right
Roman numeral first, then anion, then cation
subscripts first, then ions
Which of the following formulas represents an ionic compound?
CS2
BaI2
N2O4
PCl3
Which element, when combined with fluorine, would most likely form an ionic compound?
lithium
carbon
phosphorus
chlorine
Which of the following compounds contains the lead(II) ion?
PbO
PbCl4
Pb2O
Pb2S
What is the correct formula for potassium sulfite?
KHSO3
KHSO4
K2SO3
K2SO4
Identify the type of chemical reaction (a)
1 reactant breaks apart into 2 or more smaller products
decomposition
2 or more reactants combine to make 1 product
synthesis
O2 as a reactant & CO2 and water as products
combustion
1 element & 1 compound in products & reactants
single replacement
2 compounds in reactants & products
double replacement
The (a) are on the right side of the arrow and the (b) are on the left side of the arrow.
In a chemical equation, a reactant or product labeled (a) is a solid and a reactant or product labeled (b) is dissolved in water
In a double replacement reaction, a product that is soluble in water will be labeled (a) and a product that is a precipitate will be labeled (b)
What type of reaction is this?3KOH + H3PO4 --> K3PO4 + 3H2O (a)
The proper formula for magnesium hydroxide.
MgOH
Mg2OH
Mg(OH)2
Mg2OH2
Acids form (a) when mixed with water, and they taste (b) .
Bases form (c) when mixed with water, and they taste (d) .
Identify the ion.
Hydrogen
H+
Hydroxide
OH-
Hydronium
H3O+
When acids are mixed with water, they release (a) ions.
What are the products when an acid reacts with a metal?
A salt and water
A salt, water and carbon dioxide
A salt and hydrogen
A salt, hydrogen and carbon dioxide
Hydrochloric acid plus magnesium react to make…
magnesium oxide
magnesium chloride and water
magnesium chloride and hydrogen
hydrogen and water
Which of the following is a sign of a chemical reaction?
Change in state of matter
Change in temperature
Dissolving of a substance
Change in volume
